Eionni said:

When I connect the Garmin Edge to my Mac, it doesn't show up in Finder

You might need something like OpenMTP, on your Mac. It is free and its only purpose is accessing MTP devices like your Edge 1050

There's an alternative to openMTP called Commander that I already had for other purposes. It works to get access to the Edge1050. It isn't free, but works every time. apps.apple.com/.../id1035236694